The response to intra- and interspecific faecal assembling
signals was tested in
Rhodniusprolixus
. Papers impregnated with excrement of
R. prolixus
induced the aggregation of larvae of this species, but also of those of
Triatomainfestans
. However, faeces belonging to
T. infestans
were not able to assemble larvae of
R. prolixus
. On the other hand, there was no response of
R. prolixus
to putative chemical factors from their cuticle (footprints), in contrast
to
T. infestans
. Results are discussed as related to the ecology of both species.